Process of purifying gasoline



June 24, 1930. I w. s. BAYLIS 1,766,211

PROCESS OF PURIFYING GASOLINE Original Filed May 22, 1926 H61 TH To/e FuL vE/e IZE/B WALTER 6. Pan/s l/ Arr-ce e)? 25 ized and re ned.

Patented June 24, 1930 UNITED I STATES PATENT OFFICE WALTER S. BAYLIS, OF LOS ANGEL-ES,- CALIFORNIA, ASSIGNOB, BY MESNE ASSIGN- MEN'IS, T FILTROL COMPANY OF CALIFORNIA, OF LOS ANGELES, CALIFORNIA, A

CORPORATION OF CALIFORNIA rnoonssor rumrrme GASOLINE Original application filed May 22, 1926, Serial No. 110,960. Divided and this application flied September 19, 1927. Serial No, 220,385.

My invention relates to a method of treating liquids to remove the impurities there: from, and is particularly applicable to the petroleum industry for purifying the various petroleum products such as gasoline, this application being a division of my application entitled Decolorizing material and method of producing same, filed May 22, 1926, Serial N 0. 110,960.

In the following description the invention will bedescribed in connection with the pur-- ification of gasoline, but it should be understood that I do not thereby wish to limit this invention.

Gasoline is decolorized and purified before it is placed on the market in order to remove certain of the unsaturated and aromatic hydrocarbons and resinous matters, together with any other impurities which 2 should be removed from the gasoline.

It is an object of this invention to pro 'vide a novel and improved process of treating gasoline (or other fluid) whereby it is more quickl and morethoroughly decolor- Other objects and advantages will be pointed in in the ensuing description. In the drawing which accompanies this specification I have illustrated an apparatus in which the process of the invention may be conducted.

Referring in detail to the drawing, decolorizing clay is introduced into a mixer'l by means of a spout 2. This decolorizin clay is preferably a clay' which has ha substantiallfy all of the impurities. es ecially those 0 a basic character remove there: from to giveit the desirable adsorbent ualities and which has acid, such as sulp uric acid, combined with it. It is very important to theinvention that the decolorizing clay should be understood that equivalent acids may be used in place of sulphuric acid. I

find it most eflicient. to mix from 'fourto I six per cent sulphuric acid by weight with the decolorizing clay. The sulphuricacid, since it is substantially free from water and .since the decolorizing clay is substantially free from water, has practically no reaction on the clay; therefore, a mechanicalmixture of free sulphuric acidand decolorizing clay is obtained.

The mixingpaddles 3 are operated until a very thorough and intimate mixture of the sulphuric acid and the decolorizing clay is obtained. After this intimate mixing, a valve 6 in the lower part of the mixer 1 is opened and the mixture is delivered to a hopper 7 of a suitable conveyor 8. The mixture is delivered by the conveyor 8 to a suitable pulverizer WhlCh is in the drawing shown in the form of a tube mill pulverizer 9. This tube mill pulverizer 9 has a door 10 closing an opening through which the 'mixture is delivered to the interior of the drum '11. The tube mill is set into operation, the

drum 11 bein rotated until the mixture is completely pu verize'd.

Liquid to be treated, which in this illustration of the invention is water free .gasos line, is delivered to an agitating tank 12 by means of a pi e 13. The mixture of decolorizing clay an acid is delivered to the agitw tor through a hopper 14, the mixture being passed into the hopper 14 from the tube mill pulverizer 9. The amount of mixture required to decolorize a certain liquid depends more or lesson the liquid itself. It is within the knowledge of anyone skilledv in the art,

and therefore these proportions will not be given here and furthermore it would be impossible to state proportions which would to various li uids. The-mixture of pp y deco orizlng clay an acid 1s thoroughly and intimately mixed with the gasoline by means of agitating paddles 16-which are rotated by a vertical shaft 17, this shaft 17 being 9 su ported by bearings 18 It is often desir- "and for accomplis provided with a steam jacket 18 decolorizing clay an ders thepurifying action much more efiicient. At this time I cannot say 20. Steam is circulated throu d it is" foun at it renacid has an effect on the decolorizingclay durin the purification process or whether the acid has'an effect on the gasoline which increases the efliciency of the decolorization of the gasoline.

v 'After the" gasoline has been mixed with the "length of time to tion, agitation decolori'zing clay andthe acid for a sufiicient efiect a thoroughpurificais arrested, andavalve 22 of an outlet pipe 23 is opened. The outlet pipe 23 has a pump 24 which is set into operation at this time and which delivers the mixture of gasoline, decolorizing clay, and acid to a filter (press 26 in which the gasoline is separate from the decolorizing clay, acid, and impurities which have been adsorbed thereby. The gasoline passes from the filter press 26 through an'outlet pipe 27, the decolorizing clay, ac d, and impurities being retained in the filter press,

- I claim as my invention: I

1. A rocess of treating water free gaspllinewhmh com rises: applying 'a deeolorizing cla which as no free water or water of crystal izationand anhydrous sulfuric acid simultaneously to the said gasoline and thereafter separating the clay from the liquid. v

2. A recess of treating water free gasoline w ich comprises: agitating s1mul-- taneously therewith 'a decolorizing clay which is substantially dry and whichhas no water of crystallization and a substantially anhydrous free acid until substantial decolonization of the gasoline takes place and then separating the clay from said gasoline.

.3. A rocess oftreating water free gasoline which comprises: agitating with said gasoline an intimate mixture of a dry decolorizing clay which is substantially free from basic-impurities and which contains no water of crystallization with substantially anhydrous free sulfuric acid until substan tial' decolorization' of the gasoline takes 6' place, and then'separatinglthe gasoline front 0 the .clay.

4. A process of decolorizing water 'free' gasoline which comprises: agitating there with until substantial decolorization occurs a mixture of a d decolorizin lay having 1 ry h fo'ur to six no watefof crystallization wit gasoline uring agitawhether the free' percent. by weight of a sulfuric acid containing substantially no water, and there; after separating the clay from the gasoline.

5.\A process of decolorizing water free which comprises: agitating therewith until-substantial decolorization takes place a mixture of dry decolorizing clay substantially free of water of crystallization and of basic im percent by wei t of anhydrous sulfuric acid, and therea terseparating the clay from the gasoline.

In testimony whereof, I have hereunto set my hand at Chicago, Illinois,this 8th day of September, 1927. v

' WALT-ER S. BAYLIS.

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